1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
madam [21]
2 years ago
10

Convert 395 grams to kilograms. 39500 3.95 3.95E-3 0.395

Chemistry
2 answers:
ser-zykov [4K]2 years ago
5 0

0.395................................

NNADVOKAT [17]2 years ago
4 0
1 gram =1,000 kg

395/1000 = 0.395

0.395 kg
You might be interested in
A neutral atom becomes a positive ion when it
Alexeev081 [22]

Answer:

Neutral atoms can be turned into positively charged ions by removing one or more electrons.

Explanation:

If there is an atom that has 9 protons and 9 electrons, removing an electron from the atom will gain a postive charge.

8 0
3 years ago
Read 2 more answers
Is a process that involves the collection of information and ideas supported by evidence.
Iteru [2.4K]

Answer:

SCIENCE is a process that involves the collection of information and ideas supported by evidence because science is the knowledge gained through observations and experiments

Explanation:

i hope this will help you :)

8 0
3 years ago
Read 2 more answers
HELP PLEASE<br>Explain why the elements of group 1 and 7 are quite reactive
Sauron [17]
Group 17 is the most readily reduced elements on the periodic table, meaning that they are so close to being a stable elements, only missing 1 electron to complete their valance electron shell. Thus they will essentially react with anything to get that last electron! 

Group 1 elements are extremely reactive because they are the most readily oxidized, they are very close to reaching stability by giving up only 1 electron. Thus they will react with almost anything to give up their electron. 
8 0
3 years ago
Calculate the pH of the solution that results when 20 mL of 0.2M HCOOH is mixed with 25mL of 0.2M NaOH solution.(post-equivalenc
Paul [167]

The pH of the solution : 12

<h3>Further explanation</h3>

Reaction

HCOOH    +     NaOH   ⇒     HCOONa   +   H₂O

mol HCOOH =

\tt 20~ml\times 0.2~M=4~mlmol

mol NaOH =

\tt 25~ml\times 0.2~M=5~mlmol

Mol NaOH>mol HCOOH ⇒ at the end of the reaction there will be a strong base remains from mol NaOH, so that the pH is determined from [OH⁻]

ICE method :

HCOOH    +     NaOH   ⇒     HCOONa   +   H₂O

4                          5

4                          4                     4                   4

0                          1                      1                    1

Concentration of [OH⁻] from NaOH :

\tt \dfrac{1~mlmol}{20+25~ml}=0.02

pOH=-log[OH⁻]

pOH=-log 10⁻²=2

pH+pOH=14

pH=14-2=12

3 0
3 years ago
Which equation represents a conservation of atoms?
weqwewe [10]

Answer:

4) 4Fe + 3O₂ → 2Fe₂O₃

Explanation:

4Fe + 3O₂ → 2Fe₂O₃

In this equation the numbers of atoms are same in both side. There are four iron and six oxygen atoms are present on left and right side of equation. That's why atoms are conserved. This equation completely followed the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

8 0
2 years ago
Other questions:
  • Fe2o3 (s) + 3 co (g) → 2 fe (s) + 3 co2 (g) type of reaction
    15·1 answer
  • Select the correct answer. Which statement is true according to the quantum model of the atom? A. When an electron drops down fr
    9·2 answers
  • I am using a graduated cylinder to measure the volume of my keys . Before I place the keys in , the volume is 35mL. After I plac
    10·1 answer
  • Add the polynomials (7x^3-2x^2-12)+(3x^3-8x^2+10x)
    9·1 answer
  • Please help!!! ASAP
    15·1 answer
  • The metal tantalum becomes superconducting at temperatures below 4.483 K. Calculate the temperature at which tantalum becomes su
    14·1 answer
  • What causes waves to occur?
    9·1 answer
  • En 200 gramos de carburo de potasio ,cuya fórmula química es K4C , Cuántos moles de esa sustancia existen ?
    9·1 answer
  • During an experiment, ice and water were placed in a perfectly insulated thermos flask at 0 °C. Describe this system when it pha
    5·1 answer
  • Consider an atom having four distinct energy levels. If an electron is able to make transitions between any two levels, how many
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!